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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

City of Lewiston

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND30ND
2014ND30ND
2015ND30ND
2016ND10ND
2017ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-03V59256ND
2012-08-15V62175ND
2013-02-27V130228026-001ND
2013-06-05V130606050-001ND
2013-08-21V130822058-005ND
2014-02-25V140226039-001ND
2014-06-03V140604041-002ND
2014-08-13V140814054-004ND
2015-01-21V150122025-001ND
2015-04-14V150416021-001ND
2015-07-22V150723044-003ND
2016-02-09V160209050-002ND
2017-03-28V170328050-001ND
2017-03-28V170328050-002ND
2017-09-19V170920029-003ND
2017-09-19V170920029-004ND